Answer: utilize advanced statistical methods to improve quality by reducing defects and variability in the performance of business processes.
Step-by-step explanation:
Six Sigma simply refers to a set of tools that are utilized for the process improvement. They are the management techniques that are used for the enhancement of the business processes through the reduction in the occurence of an error. This helps in boosting the performance and the improvement in the company's profits, and as well boosting the morale of employees.
From the options given, the answer is that six sigma programs "utilize advanced statistical methods to improve quality by reducing defects and variability in the performance of business processes".